Piano performance controller



FIG. 1 is a perspective view of the front, bottom and right side of a piano performance controller showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line showing of the piano performance controller is included for the purpose of illustrating portions of the piano performance controller and forms no part of the claimed design. 

CLAIM The ornamental design for a piano performance controller, as shown and described. 